MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 71

• Manufacturer Part Number: MM912H634DM1AER2
• Description: 16-bit Microcontrollers - MCU 64KS12 LIN2XLS/HS ISENSE
• Manufacturer: Freescale Semiconductor

Specifications of MM912H634DM1AER2

• Rohs: yes
• Core: HCS12
• Processor Series: MM912F634
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5.5 V to 18 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 15
• Interface Type: SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 15
• Number Of Timers: 1
• Program Memory Type: Flash
• Supply Voltage - Max: 18 V
• Supply Voltage - Min: 5.5 V

Functional Description and Application Information
4.6.2.18
Acknowledge the interrupt by reading the Voltage Status Register - VSR. To issue a new interrupt, the condition has to vanish
and occur again. See
4.7
To protect the system during critical events, the MM912F634 analog die will drive the RESET_A pin low during the presence of
the reset condition. In addition, the RESET_A pin is monitored for external reset events. To match the MCU, the RESET_A pin
is based on the VDDX voltage level.
After an internal reset condition has gone, the RESET_A will stay low for an additional time t
reset mode will cause all MM912F634 analog die registers to be initialized to their RESET default. The only registers with valid
information are the Reset Status Register (RSR) and the Wake-up Source Register (WUS).
4.7.1
In the MM912F634 six reset sources exist.
4.7.1.1
To indicate the device power supply (VS1) was below V
is set. See
4.7.1.2
With the VDD voltage regulator output voltage falling below V
Regulator is shutdown once a LVRX condition is detected, The actual cause could be also a low voltage condition at the VDDX
regulator. See
4.7.1.3
With the VDDX voltage regulator output voltage falling below V
Section 4.4, “Power
4.7.1.4
While in Sleep mode, any active wake-up event will cause a MM912F634 analog die transition from Sleep to Reset Mode. To
determine the wake-up source, refer to
4.7.1.5
Any low level voltage at the RESET_A pin with a duration > t
active in Stop mode.
4.7.1.6
Any incorrect serving if the MM912F634 analog die Watchdog will result in a Watchdog Reset. Please refer to the
“Window Watchdog"
Freescale Semiconductor
Section 4.3, “Modes of
Resets
Reset Sources
Section 4.4, “Power
Voltage Regulator Over-voltage Interrupt (VROVI)
POR - Analog Die Power On Reset
LVR - Low Voltage Reset - VDD
LVRX - Low Voltage Reset - VDDX
WUR - Wake-up Reset
EXR - External Reset
WDR - Watchdog Reset
Supply".
for details.
Section 4.4, “Power Supply"
Operation".
Supply".
Section 4.8, “Wake-up / Cyclic
for details on the Voltage Status Register including masking information.
POR
or the MM912F634 analog die was powered up, the POR condition
LVR
RSTDF
LVRX
, the Low Voltage Reset condition becomes present. As the VDD
will issue an External Reset event. This reset source is also
, the Low Voltage Reset condition becomes present. See
Sense".
RST
before being released. Entering
Section 4.9,
MM912F634
Resets
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